When I got my new bike with disk brakes, I thought that they would perform much better in the rain. While this is true, they still squeak quite loud in wet conditions, which is quite annoying. Is there a certain type of disk brake or brake pads which perform better in the rain and aren't so loud?

I eventually learned to live with it. I've tried different brake pads, and even ones that claim to be less noisy. No difference.

Really what we're talking about is the same thing behind rubbing a finger on a wine glass, or scratching chalk across a blackboard. "Slip-stick motion". What really makes it loud, I think, is the high tension bicycle wheel.

I agree... it's really embarassing, especially when pulling up to a stop. Everyone around thinks some train is stopping haha, or they think your brakes don't work. Quite the contrary, they are working pretty good actually!!!